[Python-Dev] Document C API that is not part of the limited API

[Serhiy Storchaka]

 From the documentation:

https://docs.python.org/3/c-api/stable.html

     In the C API documentation, API elements that are not part of the 
limited API are marked as "Not part of the limited API."

But they don't.

I prepared a sample patch that adds the notes to Unicode Objects and 
Codecs C API (http://bugs.python.org/issue29086). I'm going to add them 
to all C API.

What are your though about formatting the note? Should it be before the 
description, after the description, but before the "deprecated" 
directive (as in the patch), or after the first paragraph of the 
description? Should it be on the separate line or be appended at the end 
of the previous paragraph, or starts the first paragraph (if before the 
description)? May be introduce a special directive for it?